Abstract: An audio processing system is described including an amplifier configured to receive a first audio signal and output the first audio signal to an acoustic transducer comprising a voice coil. A sensor detects a signal corresponding to voice coil current of the acoustic transducer. A controller compares the first audio signal and the detected signal and determines a second audio signal from the comparison. The second audio signal is representative of an external sound source detected via the acoustic transducer. The audio processing system may simultaneously output the first audio signal and receive the second audio signal using the same acoustic transducer.

Abstract: An audio processing system is described including an amplifier configured to receive a first audio signal and output the first audio signal to an acoustic transducer comprising a voice coil. A sensor detects a signal corresponding to voice coil current of the acoustic transducer. A controller compares the first audio signal and the detected signal and determines a second audio signal from the comparison. The second audio signal is representative of an external sound source detected via the acoustic transducer. The audio processing system may simultaneously output the first audio signal and receive the second audio signal using the same acoustic transducer.

Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta has a multi-layered structure. A rear scintillator layer (5) is configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5). A rear photosensor layer (6) attached to a back side of the rear scintillator layer (5) is configured to detect scintillation photons generated in the rear scintillator layer (5). A front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6) is configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3). A front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5) is configured to detect scintillation photons generated in the front scintillator layer (3).

Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta, the radiation detector (8) having a multi-layered structure, comprising: a rear scintillator layer (5) configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5); a rear photosensor layer (6) attached to a back side of the rear scintillator layer (5), said rear photosensor layer (6) configured to detect scintillation photons generated in the rear scintillator layer (5); a front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6), said front scintillator layer (3) configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3); and a front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5), said fron

Abstract: A current limiter for Class-D amplifiers measures and stores a position of an over-current event. By comparing the stored position, output signals can be selectively inverted. As a result, the Class-D amplifier remains in a defined modulation scheme even during period of current limiting.

Abstract: One example discloses a class-D amplifier apparatus, comprising: an amplifier circuit, having a set of input terminals, a set of output terminals, a quiescent circuit configuration, and an active circuit configuration; an amplifier control device, coupled to the amplifier circuit; wherein the amplifier control device is configured to place the amplifier circuit in the quiescent circuit configuration before measuring a voltage between the set of output terminals; wherein the amplifier control device is configured to add the output terminals voltage from the set of input terminals before placing the amplifier circuit in the active circuit configuration.

Abstract: One example discloses a class-D amplifier apparatus, comprising: an amplifier circuit, having a set of input terminals, a set of output terminals, a quiescent circuit configuration, and an active circuit configuration; an amplifier control device, coupled to the amplifier circuit; wherein the amplifier control device is configured to place the amplifier circuit in the quiescent circuit configuration before measuring a voltage between the set of output terminals; wherein the amplifier control device is configured to add the output terminals voltage from the set of input terminals before placing the amplifier circuit in the active circuit configuration.

Abstract: A current limiter for Class-D amplifiers measures and stores a position of an over-current event. By comparing the stored position, output signals can be selectively inverted. As a result, the Class-D amplifier remains in a defined modulation scheme even during period of current limiting.

Abstract: The present invention relates to a radiation detector with organic photodiodes and to a method of producing such a radiation detector. The TFT backplane (103, 104) is placed between the scintillator (101) and the organic photodiode layer stack (105, 106, 107, 108). This implies the use of transparent TFT-electronics, e.g., a-Si with back-thinned glass or an organic TFT on foil. The geometrical order enables a multitude of possible stack built- ups for OPDs and has advantages for encapsulation and manufacturing.

Abstract: A tiled detector assembly (1000) and a method for making a tiled radiation detector (1000) is described. The innovative feature of this method is that the xyz misalignment of the detector tiles (304, 304?), the origin of various image artifacts, can be significantly reduced by accurate sizing and alignment of the detector tiles (304, 304?). Consequently, image quality, yield and reliability of as-produced tiled radiation detectors are considerably improved.

Abstract: A tiled detector assembly (1000) and a method for making a tiled radiation detector (1000) is described. The innovative feature of this method is that the xyz misalignment of the detector tiles (304, 304?), the origin of various image artifacts, can be significantly reduced by accurate sizing and alignment of the detector tiles (304, 304?). Consequently, image quality, yield and reliability of as-produced tiled radiation detectors are considerably improved.

Abstract: An electronic device includes an electronic component 2, 3, such as a SAW (=Surface Acoustic Wave) filter 2, 3 having connection areas 4, 5. The filter 2, 3 is sealed off from the environment by means of a cover 6 forming a cavity 7 above the filter 2, 3. According to the invention, the cover 6 is formed by a lacquer layer 6A which is provided, at the location of the filter 2, 3, with an opening 7′ and which is covered with a photoresist layer 6B closing the opening 7′ such that the cavity 7 thus formed has a thickness above zero everywhere above the filter 2, 3. This enables an accurate and stable frequency selection by means of the filter 2, 3 and allows the device according to the invention to be very compact and easy to manufacture. Thus, the device according to the invention is very suitable for use in an application such as a mobile telephone, also after integration of the device with a semiconductor device.

Abstract: The invention relates to an electronic device comprising an electronic component 2, 3, such as a SAW (=Surface Acoustic Wave) filter 2, 3 having connection areas 4, 5. The filter 2, 3 is sealed off from the environment by means of a cover 6 forming a cavity 7 above the filter 2, 3.